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2012, 31(2) 365-370 DOI:
ISSN: 1004-5589 CN: 22-1111/P |
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Characteristics of hydrocarbon migration and accumulation in Weixinan sag of Beibuwan Basin |
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LI Song-1, YANG Xiao-Yan-2 |
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1�� Department of Exploration��CNOOC Limted��Beijing 100010��China; 2�� Research Center of CNOOC��Beijing 100027��China |
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Abstract��
Weixinan sag in Beibuwan Basin is a faulted lake basin in type�� In hydrocarbon migration and accumulation process��the faults can connect the source rocks with reservoirs�� The unconformities result in contact and connection between the different formations which provide hydrocarbon lateral migration paths for the adjacent traps to form accumulations�� The distribution characteristics of hydrocarbon in Weixinan sag can be described as " rift connecting the source rocks��hydrocarbon migrating along the ridge��source rocks from both sides��multiple accumulations in a single structure and oil-bearing in full sag" ��and formed a hydrocarbon accumulation zone of multiple reservoirs and accumulations with same source�� |
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Keywords��
Weixinan sag
fault
migration
hydrocarbon accumulation
Beibuwan Basin
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Received Revised Online: |
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